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<p>[QUOTE=&quot;dougsmit, post: 7750397, member: 19463&quot;]I would give anything to have a relative who wanted to handle my coins.&nbsp; </p><p><br /></p><p>A low end stereo microscope costs less than the sales tax on an R3 unless you live in a state with no tax.&nbsp;&nbsp; Yes, Leica does make scopes that cost more than a complete RF lens set. That is overkill even for the best coins.&nbsp; </p><p><br /></p><p>I would be interested in what the white stuff turns out to be and what removes it.&nbsp; Acetone strikes me as most likely.&nbsp; I would place the coin under the stereo microscope and probe the stuff with a toothpick.&nbsp; Yes, you can scratch a silver coin but usually it is not the tool (like Q-tip) but dirt imbedded in the tool that scratches but having a light touch helps.&nbsp; My coins are all scratched before I get them.&nbsp; I have no proof ancients.[/QUOTE]</p><p><br /></p>

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